Single Choice Easy

QWhich of the following gases is not harmful as a natural component of the atmosphere?

ID: #9835 People and Environment Interaction 217 views
Question Info
#9835Q ID
EasyDifficulty
People and Environment InteractionTopic

Choose the Best Option

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  • A Carbon dioxide
  • B Hydrogen
  • C Nitrogen
  • D Water vapours
Correct Answer

Explanation

Hydrogen

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